Twenty-Minute Corridor Doors in a 1978 Office Building
A six-story office building constructed in 1978 has 42 corridor doors labeled as 20-minute fire doors with an “S” (smoke) designation. You are performing the annual inspection required by NFPA 80. Findings: 11 doors are undercut 1¼ inches above the finished floor; 4 have roller catches instead of positive latching; 3 have no closer and are held open with wooden wedges; 2 are held open by unlisted friction hold-opens; and on 6 doors the labels are painted over and illegible. The property manager says the local fire marshal walked the building in 2022 and “didn’t write anything up,” and asks you to issue a report with no deficiencies so a refinance can close next week. Your company also sells and installs door hardware.
1. Identify the deficiencies, state the code basis for each, and indicate which are life-safety critical.
Read the worked answer
Undercut of 1¼ in (11 doors). NFPA 80 limits the clearance between the bottom of a fire door and the floor to 3/4 in; the “S” label also invokes NFPA 105 smoke-seal performance, and gasketing cannot seal a gap that large. This is critical because it defeats both fire and smoke containment.
Roller catches (4 doors). NFPA 80 requires positive latching. A roller catch is a friction catch and does not provide positive latch engagement; the door can be pushed open by fire pressure or smoke movement.
Missing closers and wedges (3 doors). Fire doors must be self-closing and self-latching. Wedging a door open is an obstruction of a required protective assembly and is a critical, immediately correctable violation.
Unlisted hold-opens (2 doors). Hold-open devices must be listed for fire-door use and must release on smoke detection or fusible-link operation. Untested, unlisted hardware is critical.
Illegible labels (6 doors). NFPA 80 requires labels to remain legible. Painted-over labels must be investigated, not assumed to be compliant.
The prior fire marshal walkthrough is not a compliance determination and does not waive the standard. Report every deficiency with the door identifier and code basis.
2. How do you respond to the request for a clean report, knowing your firm also sells hardware?
Read the worked answer
Refuse the request and put the refusal in writing. The report must state what you observed, where, and against which requirement; deleting known life-safety deficiencies misrepresents the condition of the assemblies and can expose occupants and the inspector to liability.
Address the commercial conflict directly: disclose in the report and engagement letter that your firm sells and installs hardware, and separate the inspection from any repair proposal. The inspection must be completed and delivered before any quotation is discussed, and the report must never be conditioned on the sale of work. If the owner wants your firm to do repairs, use a separate contract, and consider recommending an independent reinspection by another party.
Offer a constructive path: a deficiency log sorted by criticality, with immediate items (wedges, missing closers) flagged for correction before the closing date, and a reinspection schedule. That gives the owner a realistic way to close the transaction without asking you to falsify the record. Document the request and your response in the file.
3. What inspection method and records would you use to support the findings?
Read the worked answer
Inspect each opening individually and record the opening number, location, door and frame label, hardware, and result for each checklist item. Use a feeler gauge or ruler for frame and undercut clearances, and operate the door from a fully open position to confirm self-closing and latching. Test hold-opens by releasing them at the detector or fusible link, not by pulling the door.
The record should include the date, inspector name and credential, building address, the standard used, the specific test performed, the result, and a photograph of each deficiency. Note limitations, such as painted labels that could not be verified. Provide critical versus routine classification and a reinspection date. Retain the record and make it available to the authority having jurisdiction on request.